Reference design for Li-ion single cell charger based on TP4056 IC. Rprog setting output current to 900mA. VIN and BAT connector are block terminal connectors. #Template #module #referenceDesign #charger #TP4056 #reusable #module #batterycharger #sublayout

Single-phase student energy meter using ATM90E26 metering IC, STM32F103 MCU, OLED display, USB-UART communication, transformer voltage sensing, and SCT013 current sensing. Designed for a 2-layer PCB within 150 mm x 150 mm and a BOM target below 50 EUR.

Multi-layer circular BLDC motor controller for a 24 V, up to 750 W system using an ESP32-WROOM with DRV8323RS gate driver, six external MOSFETs, 2 mOhm shunt current sensing, bottom-mounted AS5600 encoder, USB-C programming/user interface, 3.3 V logic powered from the DRV8323RS buck regulator, and heavy motor phase pads sized for approximately 30 A current paths. Target layout is a circular board around 50 mm diameter, expandable if required for thermal management, power routing, and signal integrity.

Automotive smart fuel pump controller with >12 V battery qualification, protected battery input, analog FSCM command following, 25 A current sensing, thermal/fault indication, blue/red LED signaling, and 5-second buzzer alert. Control and fault nets are explicitly terminated to avoid floating or undriven states; any intentionally provisional control nodes are weakly biased to safe defaults during refinement.

Battery management system PCB-A for an off-grid 12 V AGM lead-acid battery with current sensing, voltage and temperature monitoring, ESP32 control, relay output, split PGND/AGND grounding, and JLCPCB-ready 2-layer layout constraints.

This tiny board is an easy way to use Toshiba’s TB6612FNG dual motor driver, which can independently control two bidirectional DC motors or one bipolar stepper motor. A recommended motor voltage of 4.5 V to 13.5 V and peak current output of 3 A per channel (1 A continuous) make this a great motor driver for low-power motors. #Module #Motor-Driver #TB6612FNG

Portable Raspberry Pi Pico and NEO-6M GPS tracker powered by a single-cell Li-ion battery, with USB-C charging input, CC resistors, and USB-line ESD protection. Designed to support about 65 mA active current and roughly 30 hours from a 2000 mAh cell, following the performance targets from the evaluation paper.

Industrial dual motor controller using an ESP8266 NodeMCU and L298N dual H-bridge for 2x 12V 2A DC motors, with MQTT remote control, manual override buttons, 5-bit DIP addressing, reset input, status LEDs, SS34 reverse-polarity protection, 5A fuse, LM2596 5V buck conversion, TVS surge protection, and future expansion provisions for INA219 current sensing, OTA firmware, RS485, and enclosure integration.

ChargeGuard Gateway - PCB layout review status: schematic power tree review is clean; remaining work is PCB-layout-only cleanup. Current DRC inventory: 136 Overlapping Copper, 56 Floating Copper, 88 Airwires, 0 Missing Footprints, 0 Invalid Layer, 0 Important Overrides. Priority 1: protected input and power-path regions around VIN_PROTECTED, VIN_FILTERED, +5V_MAIN, +3V3_MAIN because these can block reliable routing and copper pours. Manual PCB editor tasks: remove/reshape overlapping copper, reconnect broken traces or redraw routes causing airwires, delete stranded copper islands, inspect ambiguous pad-to-trace shorts around power devices and connectors. Agent-preparable tasks: maintain issue inventory, classify nets and priorities, preserve stackup/documentation, define DRC recheck loop, and guide Auto-Layout sequencing after manual copper cleanup. Recheck loop: fix one issue class or one critical region at a time, rerun DRC, confirm counts decrease, then move to next batch until airwires/floating copper/overlaps are zero. Completion checklist: 1) clear power-path overlaps, 2) remove floating copper islands, 3) close all airwires, 4) rerun DRC after each batch, 5) confirm clean layout before manufacturing export.

T-Mech prototyp_v2 - High current fan test fixture (5.0mm power traces, GND_MOC heatsink pour, star ground at 1000uF cap)

If you are planning to create an MSR account in 2026, using a referral code at sign-up may unlock a small welcome bonus and can also help you earn rewards later by inviting others. This guide explains what an MSR referral code is, how to use it, and what to check before you rely on any bonus offer. What is an MSR referral code? A referral code is a short identifier tied to an existing user account. When a new user signs up and enters the code, MSR can attribute that sign-up to the referrer. Many referral programs provide an incentive such as: A sign-up bonus for the new user A referral bonus for the person who shared the code (after qualifying actions) In this article, the referral code is: kNeyhb11 What you can get in 2026 Promotions can change over time, but referral offers are commonly framed as: $5 sign-up bonus (for the new account) Additional referral rewards (when you share your code and others join) Important: The exact amount, eligibility, and timing depend on MSR’s current referral terms. Always confirm the current offer details on the official sign-up/referral page. How to use the MSR referral code (kNeyhb11) Use the code during account creation, typically in one of these places: Sign up for a new MSR account. Look for a field labeled Referral code, Promo code, or Invite code. Enter: kNeyhb11 Complete registration and follow any required steps (for example, verifying email or completing a first activity). If you already created your account, some programs do not allow retroactive referral credit, so it’s best to enter the code during sign-up. Why MSR referral bonuses sometimes don’t show up immediately Even when you enter a code correctly, bonuses can be delayed or conditional. Common reasons include: The program requires verification (email/phone/identity). The bonus posts only after a qualifying action (first purchase, first task, first transaction, etc.). Tracking may fail if you switch devices, use private browsing, or have ad/tracker blocking enabled. Your account may be ineligible due to region, duplicate accounts, or policy restrictions. Tips to make sure the referral tracks properly To reduce the chance of referral issues: Enter the code before you finish sign-up. Use one device and one browser session from start to finish. Avoid switching networks mid-sign-up (e.g., Wi‑Fi to cellular). Take a screenshot of the referral confirmation (if shown). Frequently asked questions Is the MSR referral code “kNeyhb11” free to use? Referral codes are typically free to use. You’re just linking your sign-up to someone’s invite. Can I use a referral code after I sign up? Some programs allow it within a short window, many do not. Check MSR’s referral terms or help center. Do I get the $5 instantly? Sometimes it’s instant, sometimes it’s after verification or a qualifying step. The official terms will say. Final note (best practice) Referral promotions change, and the safest approach is to confirm the current 2026 offer directly on MSR’s official referral or sign-up page. If you share that link (or the text of the terms), I can rewrite this article to match the exact conditions and wording precisely.

T-Mech prototyp_v2 - High current fan test fixture (5.0mm power traces, GND_MOC heatsink pour, star ground at 1000uF cap)

T-Mech prototyp_v2 - High current fan test fixture (5.0mm power traces, GND_MOC heatsink pour, star ground at 1000uF cap)

New users at Temu receive a 40% Off discount on orders over 40% Off Use the code ["acx420275" or "acr841270"] during checkout to get Temu Discount 40% off For New Users. You can save 40% Off off your first order with the Promo Code available for a limited time only. Extra 30% off for new and existing customers + Up to $40 Off % off & more. Temu Promo Codes for New users-["ACX420275" or "acx420275"] Temu discount code for New customers- ["ACX420275" or "acx420275"] Temu $40 Off Promo Code- ["ACX420275" or "acx420275"] what are Temu codes- "ACX420275" or "acx420275" does Temu give you $40 Off - ["ACX420275" or "acx420275"] Yes Verified Temu New customer offer {"ACX420275" or "acx420275"} Temu discount code 2026 {"ACX420275" or "acx420275"} 100 off Promo Code Temu {"ACX420275" or "acx420275"} Temu 100% off any order {"ACX420275" or "acx420275"} 100 dollar off Temu code {"ACX420275" or "acx420275"} Temu coupon $40 Off off for New customers There are a number of discounts and deals shoppers n take advantage of with the Teemu Coupon Bundle ["ACX420275" or "acx420275"]. Temu coupon $40 Off off for New customers ["ACX420275" or "acx420275"] will save you $40 Off on your order. To get a discount, click on the item to purchase and enter the code. You n think of it as a supercharged savings pack for all your shopping needs Temu Promo Code 80% off – ["ACX420275" or "acx420275"] Free Temu codes 50% off – ["ACX420275" or "acx420275"] Temu coupon $40 Off off – ["ACX420275" or "acx420275"] Temu buy to get ₱39 – ["ACX420275" or "acx420275"] Yes, Temu offers 40% off coupon code [{"acx420275" or "acr841270"}] for first-time users. You can get a $40 bonus plus 40% off any purchase at Temu with the $100 Coupon Bundle if you sign up with the referral code ["ACX420275" or "acx420275"] and make a first purchase of $100 or more. The Temu 40% Off coupon code ("acx420275" or "acr841270") will save you 40% on your order. To get a discount, click on the item to purchase and enter the code. Yes Temu offers 40% Off Coupon Code "acx420275" or "acr841270” for Existing Customers. You can get a 40% discount with Temu coupon code {"acx420275" or "acr841270"}. This exclusive offer is for existing customers and can be used for a 40% reduction on your total purchase. Enter coupon code {“acx420275" or "acr841270"} at checkout to avail of the discount. You can use the code {"acx420275" or "acr841270"} to get a 40% off Temu coupon as a new customer. Apply this Temu coupon code 40% off "acx420275" to get a 40% discount on your shopping with Temu. If you are who wish to join Temu, then you should use this exclusive Temu coupon code 40% off ("acx420275") and get 40% off on your purchase with Temu. * "ACX420275" or "acx420275": Enjoy flat 40% off on your first Temu order. * "ACX420275" or "acx420275": Download the Temu app and get an additional 40% off. * "ACX420275" or "acx420275": Celebrate spring with up to 90% discount on selected items. * "ACX420275" or "acx420275": Score up to 90% off on clearance items. * "ACX420275" or "acx420275": Beat the heat with hot summer savings of up to 90% off. * "ACX420275" or "acx420275": Temu UK Coupon Code to 40% off on Appliances at Temu. Temu Promo Code 80% off – ["ACX420275" or "acx420275"] Free Temu codes 50% off – ["ACX420275" or "acx420275"] Temu coupon $40 Off off – ["ACX420275" or "acx420275"] Temu buy to get ₱39 – ["ACX420275" or "acx420275"] Temu 129 coupon bundle – ["ACX420275" or "acx420275"] Temu buy 3 to get €99 – ["ACX420275" or "acx420275"] Exclusive $40 Off Off Temu Discount Code Temu $40 Off Off Promo Code : "ACX420275" or "acx420275" Temu Discount Code $40 Off Bundle ("ACX420275" or "acx420275") "ACX420275" or "acx420275" Temu $40 Off off Promo Code for Existing users : ("ACX420275" or "acx420275") Temu Promo Code $40 Off off Verified user can get a 40 off Temu Coupon code using the code ((acx420275”)). This Temu 40 Off code is specifically for new and existing customers both and can be redeemed to receive a 40 discount on your purchase. Our exclusive Temu Coupon code offers a flat 40 off your purchase, plus an additional 30% discount on top of that. You can slash prices by up to 40 as a new Temu customer using code ((acx420275”)). Existing users can enjoy 40 off their next haul with this code. But that’s not all! With our Temu Coupon codes for 2025, you can get up to 90% discount on select items and clearance sales. Whether you’re a new customer or an existing shopper, our Temu codes provide extra discounts tailored just for you. Save up to 30% with these current Temu Coupons ["^"acx420275"^"] for October 2025. The latest Temu Coupon codes at here.

T-Mech prototyp_v2 - High current fan test fixture (5.0mm power traces, GND_MOC heatsink pour, star ground at 1000uF cap)

Architectural Lavender Translation Collar – ESP32‑S3 Wi‑Fi + LoRa, USB‑C, Li‑ion, low‑power design Overview Experience a cutting-edge IoT solution with this low‑power board built around the ESP32‑S3‑MINI‑1‑N8. Designed for seamless Wi‑Fi (2.4 GHz), BLE, and LoRa (868 MHz) connectivity, this board integrates ENS161 and ENS210 sensors over I2C alongside an RFM95W‑868 LoRa radio on SPI. It is powered via a 3.7 V Li‑ion cell with USB‑C charging up to 500 mA, complete with full battery protection, a robust 3.3 V rail tailored for Wi‑Fi burst currents, and per‑peripheral power gating to enhance energy efficiency. Core Features • MCU: ESP32‑S3‑MINI‑1‑N8 equipped with an onboard PCB antenna for 2.4 GHz Wi‑Fi/BLE, ensuring optimal wireless performance. • Sensors: Integrated ENS161 and ENS210 sensors utilize a shared I2C bus with controllable 4.7 kΩ pull‑ups for streamlined communication. • LoRa Radio: The RFM95W‑868 module, connected via SPI, enables long‑range communication at 868 MHz. Power & USB‑C Connectivity • Battery: A reliable 3.7 V 1200 mAh Li‑ion battery connected via a right‑angle JST‑PH 2‑pin connector features built‑in battery protection. • Charging: The USB‑C receptacle, with CC resistors and TVS protection on D+/D− along with series resistors, supports fast, safe charging with a current limit of 500 mA. • Regulation: A dedicated 3.3 V regulator capable of handling Wi‑Fi burst currents coupled with bulk and high‑frequency decoupling ensures stable operation, supported by status LEDs indicating power and charge states. Low‑Power Control • Peripheral Management: Load switches allow selective power‑gating of the ENS161, ENS210, and RFM95W modules, controlled directly by ESP32‑S3 GPIOs. • Energy Efficiency: Controllable I2C pull‑ups minimize idle current, vital for prolonged battery life in IoT applications. RF and Antenna Integration • 2.4 GHz: Utilizes the integrated PCB antenna on the ESP32‑S3 with proper ground/metal keep‑out zones for optimal signal integrity. • 868 MHz: Features a controlled‑impedance feed from the RFM95W to a PI matching network (C‑L‑C pads) with flexible antenna options—selectable via SMA connector, chip antenna, or PCB trace—and includes RF ESD protection. Connectivity & Debug Features • USB‑C Interface: Provides secure data connectivity with integrated safeguards and proper terminations. • Debugging: A comprehensive programming/debug header exposes EN, BOOT, and UART lines, with test points on key rails and buses (3V3, VBAT, SCK, MOSI, MISO, SDA, SCL, RESET/EN, GND) to simplify development and troubleshooting. Design Verification • Rigorous ERC/DRC and decoupling checks ensure adherence to component ratings and optimal signal routing. • Maintain RF keep‑outs and impedance‑controlled traces for both 2.4 GHz and 868 MHz paths, securing reliable performance even during high‑intensity operations. #IoT #ESP32S3 #LoRa #LowPowerDesign #USB-C #WirelessConnectivity #BatteryPowered #RFDesign

Power Tree and Actuator Driver with Robust Filtering, Current Sensing, PGOOD Sequencing, and Star-Tie Grounding

System Architecture Overview with PWM Interface, Power Stage, Protections, EMI Filters, Connectors, Hall-Effect Current Monitoring, 4-pin JST-XH Control Header, Isolation & Default-OFF PWM Behavior, Compact Mechanical Layout #hall-sensing #isolated-control #compact-layout

MCU-Controlled 7-Port USB 3.0/2.0 Hub with Dual Extra USB 3.0 Downstream Ports, Per-Port 900mA Power Switches, High-Speed TVS/CMC Protection, Controlled Line Impedance (85Ω SS / 90Ω USB2), and ≥6.3A Total Current Output

Dual-FOC Brushless DC Motor Controller with Integrated USB-C PD and Current Sensing

CM5-based controller updated with SD card interface support: 47k pull-ups on CMD and DAT0-DAT3, local 100nF and 10uF decoupling on the SD 3.3V rail, and card-detect reserved as a future option because the current SD module symbol does not expose a detect pin.

A common reference point and return path for electric current in electronic circuits—commonly referred to as ground. It serves as the baseline voltage level and is essential for stable circuit operation and signal integrity.

Adjustable Voltage Regulator Circuit using LM324 IC with Over Current Protection

A common reference point and return path for electric current in electronic circuits—commonly referred to as ground. It serves as the baseline voltage level and is essential for stable circuit operation and signal integrity.

a solar battery BMS for a DIY battery bank consiting of 20 12V, 200Ah LiFEPO4 batteries in a 4S5P configuration. The BMS should integrate with a Victron SmartShunt monitor for voltage and current readings as well as DIY bank voltage monitors that measure and publish to an MQTT server. The Victron data is also available on the MQTT server. The BMS should add an RS485 port for communicating with Fortress Power Inverters to communicate battery health, charge state, voltage, and other required metrics.