Previous Message Retrieval

flux

Updated to: "3.3V Li-ion MagTek Stripe Reader Interface with ATtiny85, AT24C256, and MCP1700 (Edge-mount Pads, 25x12.5 mm, GND Pour, ERC/DRC OK)"

flux

No changes were applied due to execution being halted.
Work not done (all tasks remain):
  • Update the project description to reflect edge-mounted BAT+/VBAT and BAT–/GND pads, board size, and GND pour
  • Define and save the updated system architecture diagram
  • Remove the 18650 holder from the schematic
  • Add BAT+ and BAT– generic THT pad symbols and wire them to VBAT and GND
  • Remove any 18650 footprint from the PCB layout
  • Place two edge-mounted THT pads (1.2 mm drill, 2.4 mm pad) on the board edge
  • Add “+” and “–” silkscreen markings by each pad
  • Verify board outline remains 25.0 × 12.5 mm and bottom GND pour
  • Configure design rules (0.2 mm trace/clearance, 0.4 mm power, 0.3/0.6 mm via)
  • Run ERC and DRC with no violations
Success criteria not met:
  • Schematic still includes the old battery holder and lacks the BAT+/BAT– pads
  • PCB layout unchanged from its original state
Next step: resume execution by updating the project description (step 1.1) and proceed through the implementation plan once credit is restored.

Flux stopped

CAN YOU HELP ME WITH THE REVIEWS

copilot

I'm not currently able to talk here. Please message me in the Copilot Tab on the right.
9mo
veryannoyed

veryannoyed

@copilot CAN YOU HELP ME WITH THE REVIEWS
9mo

copilot

Sure! Could you please specify what specific aspects of the project you would like reviewed? Are you looking for a review of the schematic design, the PCB layout, component selection, or something else? Let me know so I can assist you effectively!
9mo
Someone is typing...
1
go ahead and finish this for me

copilot

I'm not currently able to talk here. Please message me in the Copilot Tab on the right.
9mo
veryannoyed

veryannoyed

@copilot go ahead and finish this for me
9mo

copilot

Sure! Let's take a closer look at your project to see where we can make progress.
Project Overview:
Your project involves interfacing a MagTek Stripe Reader with an ATtiny85 microcontroller, using an AT24C256 EEPROM for data storage, and a MCP1700 LDO regulator for power management. The system is powered by a 3.3V Li-ion battery. Here's a brief overview of the components involved:
  • Microcontroller: ATtiny85
  • EEPROM: AT24C256
  • Voltage Regulator: MCP1700
  • 6-pin Connector for MagStripe: J3
  • Battery Connector: J2
  • Power Indicator LED: D1
  • Bulk Capacitor: C1
Key Connections:
Let's ensure all essential components are correctly connected, following your layout:
Power Supply:
  • Battery to MCP1700:
    • Connect J2:2 to C1:1 (GND)
    • Connect J2:1 to U1:3 (VI)
    • Connect C1:2 to U1:3 (VI)
  • MCP1700 Output:
    • Connect U1:2 (VO) to Rail:1 (3.3V)
Microcontroller & EEPROM:
  • ATtiny85 Power:
    • Connect Rail:1 (3.3V) to U2:8 (VCC)
    • Connect GND:GND to U2:4 (GND)
  • I2C Bus Connections:
    • Connect U3:5 (SDA) to U2:2 (XTAL1/PB3)
    • Connect U3:6 (SCL) to U2:3 (XTAL2/PB4)
    • Install pull-up resistors: Connect R2:P1 to Rail:1 (3.3V), similarly for R3:P1
Additional Connections:
  • LED Indicator:
    • Connect R1:P1 to U1:2 (VO)
    • Connect R1:P2 to D1:A
    • Connect D1:K to GND:GND
If you're ready with this, do you want to double-check any connections, or is there a specific section you'd like to work on next?
9mo
Someone is typing...
2
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magstripreader1022 thumbnail
3.3V Li-ion MagTek Stripe Reader Interface with ATtiny85, AT24C256, and MCP1700 (Edge-mount Pads, 25x12.5 mm, GND Pour, ERC/DRC OK)

Properties

mm
V
mm
mm
mm
mm
mm
mm
mm
mm
mm
Diagram



  
    
  
  
    
  









VBAT

VBAT

3.3V








"Edge THT Battery Pads"
"100µF Bulk Capacitor"
"MCP1700T-3302 LDO"
"3.3V Rail"
"ATtiny85 MCU"
"AT24C256 EEPROM"
"MagTek 6-pin Connector"
"ISP Header"

Pricing & Availability

Distributor

Qty 1

Arrow

$2.10–$2.41

Digi-Key

$1.93–$2.24

LCSC

$3.33–$4.18

Mouser

$3.22

TME

$3.40

Verical

$14.34–$17.39

Controls