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https://youtu.be/FL7e0OXTLic?si=FojCAhJR3KoX\_sd3
1y
24
how do I connect this to the regulator and the rp2040?
3y
To connect the AMS1117-3.3 regulator (U2) and the RP2040 microcontroller (U1), follow these steps:
- Connect the input voltage (5V_USB) to the VI pin of the AMS1117-3.3 regulator (U2).
- Connect the GND pin of the AMS1117-3.3 regulator (U2) to the ground (Net 0).
- Connect the VO pin of the AMS1117-3.3 regulator (U2) to the 3V3 net.
- Connect the 3V3 net to the IOVDD pins of the RP2040 microcontroller (U1).
- Connect the VREG_VIN pin of the RP2040 microcontroller (U1) to the output of the regulator through a capacitor (C5 or C6).
- Connect the VREG_VOUT pin of the RP2040 microcontroller (U1) to the input of the regulator through a capacitor (C7 or C8).
- Connect the DVDD pins of the RP2040 microcontroller (U1) to the output of the regulator through a capacitor (C3 or C4).
Make sure all the capacitors are connected to the ground (Net 0) on their other pins.
3y
2
where do I connect the DVDD pins to?
3y
To connect the RUN pin on the RP2040 (U1), you should connect it to a pull-up resistor (typically 10kΩ) and then connect the other end of the resistor to the 3.3V supply. This will keep the microcontroller running. If you want to add a reset button, connect a normally open push button between the RUN pin and ground. When the button is pressed, it will pull the RUN pin low, resetting the microcontroller.
3y
How do I connect the Run pin?
3y
3y
Connect the DVDD pins of the RP2040 (U1) to the output of the AMS1117-3.3 voltage regulator (U2:VO) through capacitors C3 and C4. This will provide a stable 3.3V supply to the microcontroller.
3y
And where I connect the USB_VDD pins to? Do they need 3.3V or 5V?
3y
Connect the USB_VDD pin of the RP2040 (U1) to a 3.3V voltage source. In your current circuit, you can connect it to the output of the AMS1117-3.3 voltage regulator (U2:VO). This will provide the required 3.3V supply to the USB_VDD pin.
3y
3
explain this project.
2y
This project is a Raspberry Pi pico-like board designed with several components. The main microcontroller is the RP2040 (U1) which is a dual-core ARM Cortex M0+ processor, with flexible clock running up to 133 MHz.
The project involves several other key components:
-
AMS1117-3.3 (U2): This is a low dropout voltage regulator that provides a 3.3V output, which is used to supply power to the entire circuit, including the RP2040.
-
W25Q128JVSIQ (U4): This is an integrated circuit that provides 128M-bit serial flash memory for the microcontroller.
-
Crystal Oscillator (Y1) with a frequency of 12MHz: This is used to provide a clock signal to the microcontroller.
-
USB-C Receptacle (J1): This is the USB interface for the board, which can be used for power supply as well as data transfer.
-
Capacitors and Resistors: There are several capacitors (C1 - C15) and resistors (R1 - R5) placed at various points in the circuit to filter noise, smooth out voltage, and pull up/down certain signals.
-
Switch (SW1): This is a push button switch used to control the RUN pin of the RP2040, which can be used to reset the microcontroller.
The circuit also includes test points for debug interfaces - SWCLK and SWD.
Several nets connect these components together to form the various functionalities of the board. For example, the 3.3V net distributes the output of the voltage regulator to the power supply pins of the RP2040 and other components. The SPI nets (SPI_D0, SPI_D1, SPI_D2, SPI_D3, SPI_SCLK, SPI_CS) connect the RP2040 to the flash memory for data storage and retrieval. The USB data lines (D+, D-) are connected to the RP2040 through resistors.
Overall, this project seems to be a compact, yet powerful, microcontroller board with flash memory and USB connectivity, similar to a Raspberry Pi Pico.
2y
18
how do I connect the run pin on U1?
2y
The RUN pin on RP2040 (U1, pin 26) functions as an enable/reset pin for the microcontroller, according to the datasheet excerpt[1]. To use it, you can typically connect a switch or jumper between the RUN pin and the ground. Pressing the switch or installing the jumper would pull the pin to GND and reset the chip.
Here's how you might connect it:
- Connect one terminal of SW1 to the RUN pin (U1, pin 26).
- Connect the other terminal of SW1 to GND.
This allows you to manually reset the RP2040 by pressing SW1.
Please note this assumes you currently have SW1 available as a switch in your design. If not, please add a suitable switch or jumper to your design in Flux.
[1] Page 616
2y
22
does this work to convert the 5V from USB to the 3.3V for the RP2040?
3y
For the AMS1117-3.3 LDO in your circuit, it is recommended to use a 10µF ceramic capacitor at the input and a 10µF ceramic capacitor at the output for decoupling purposes. These capacitors help stabilize the regulator and reduce output voltage noise. Make sure to place the capacitors as close as possible to the LDO's input and output pins for optimal performance.
3y
3y
Yes, the AMS1117-3.3 voltage regulator (U2) in the circuit is designed to convert the 5V input from the USB to a stable 3.3V output, which is suitable for powering the RP2040 microcontroller (U1). Make sure to connect the 5V input to the VI pin of the AMS1117-3.3 and the 3.3V output to the VREG_VIN pin of the RP2040.
3y
What is the tab pin for?
3y
The TAB pin on the AMS1117-3.3 voltage regulator is typically connected to the device's thermal pad. It serves as a heat sink to dissipate heat generated during operation, helping to maintain the regulator's temperature within safe limits. In most cases, the TAB pin is also electrically connected to the GND pin, so it can be connected to the ground plane on the PCB for better thermal performance.
3y
1
does this memory work for the rp2040?
3y
To determine if the memory is compatible with the RP2040, please provide the memory part number or specifications. I can then help you verify its compatibility.
3y
It's a W25Q128JVSIQ
3y
The W25Q128JVSIQ is a 128M-bit (16M-byte) serial flash memory from Winbond. It is compatible with the RP2040 microcontroller. The RP2040 supports Quad-SPI communication, which the W25Q128JVSIQ also supports. You can connect the memory to the RP2040's QSPI pins (QSPI_SCLK, QSPI_CSN, QSPI_SD0, QSPI_SD1, QSPI_SD2, and QSPI_SD3) for communication.
3y
Perfect, how do I power it? 3.3V is enough?
3y
Yes, 3.3V is enough to power the W25Q128JVSIQ. The operating voltage range for this memory chip is 2.7V to 3.6V. You can connect the 3.3V power supply to the VCC pin of the W25Q128JVSIQ.
3y
Does it need decoupling capacitors?
3y
Yes, the W25Q128JVSIQ requires decoupling capacitors. It is recommended to place a 0.1uF (100nF) ceramic capacitor close to the VCC and GND pins of the memory chip to help stabilize the power supply and reduce noise. Make sure the capacitor is connected between the VCC and GND pins.
3y
4
list all U1 pins in a table format. For each pin provide its pin number, pin nam...
2y
Sure, here's the information you asked for the U1 component, which is a Raspberry Pi RP2040. Keep in mind that you can always refer back to the chip's datasheet for more detailed information on each pin's function.
Table
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | IOVDD | IO supply |
| 2-9 | GPIO0-GPIO7 | General Purpose IO pins |
| 10 | IOVDD | IO supply |
| 11-18 | GPIO8-GPIO15 | General Purpose IO pins |
| 19 | TESTEN | Test enable (connect to Gnd) |
| 20 | XIN | Crystal In |
| 21 | XOUT | Crystal Out |
| 22 | IOVDD | IO supply |
| 23 | DVDD | Core supply |
| 24 | SWCLK | Serial Wire Debug Clock |
| 25 | SWD | Serial Wire Debug |
| 26 | RUN | Chip enable/reset |
| 27-37 | GPIO16-GPIO26 | General Purpose IO pins |
| 38-41 | GPIO26/ADC0-GPIO29/ADC3 | General Purpose IO pins or ADC |
| 42 | IOVDD | IO supply |
| 43 | ADC_AVDD | ADC supply |
| 44 | VREG_VIN | Voltage regulator input supply |
| 45 | VREG_VOUT | Voltage regulator output |
| 46 | USB_DM | USB D- |
| 47 | USB_DP | USB D+ |
| 48 | USB_VDD | USB power supply |
| 49 | IOVDD | IO supply |
| 50 | DVDD | Core supply |
| 51-56 | QSPI_SD3-QSPI_CSN | Quad SPI memory interface |
| 57 | GND | Common ground |
[1] Page 616
2y
23
U1 GPIO19 - U_TLC1 SIN
SPI_CS
3V3
U1 GPIO17 - U_TLC1 XLAT
XOUT
3V3
U1 RUN - SW1 P2
XOUT
3V3
U1 GPIO18 - U_TLC1 SCLK
SPI_D3
SPI_D0
C17 P1 - U_TLC2 VCC
U1 RUN - SW1 P2
3V3
Dn
J2 2 - GND GND
U1 GPIO18 - U_TLC1 SCLK
SPI_CS
XIN
C19 P2 - GND_PORTAL GND
U1 GPIO20 - U_TLC1 BLANK
SPI_SCLK
U_TLC1 GND - U_TLC2 GND
U1 GPIO20 - U_TLC1 BLANK
U1 GPIO17 - U_TLC1 XLAT
3V3
U1 GPIO16 - U_TLC1 GSCLK
XIN
Dp
U_TLC1
3V3
SPI_SCLK
SPI_D2
3V3
U1 GPIO16 - U_TLC1 GSCLK
SPI_D1
C4
Capacitance
100nF
C7
Capacitance
10uF
U2
Manufacturer Part Number
AMS1117-3.3
U1
Manufacturer Part Number
RP2040
C2
Capacitance
100nF
C15
Capacitance
0.1uF
C11
Capacitance
10uF
C8
Capacitance
100nF
C1
Capacitance
10uF
C5
Capacitance
10uF
C13
Capacitance
22pF
GND_PORTAL
C14
Capacitance
22pF
GND
C10
Capacitance
100nF
C6
Capacitance
100nF
C9
Capacitance
10uF
C3
Capacitance
10uF
C12
Capacitance
10uF
R7
Resistance
500 Ω
SW1
SWCLK
R2
Resistance
27.4 Ω
U4
R6
Resistance
500 Ω
Y1
Frequency
12MHz
SWD
R1
Resistance
500 Ω
R3
Resistance
27.4 Ω
Reviews
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibraryjharwinbarrozo16.5k- A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibraryjharwinbarrozo1.5M
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliantjharwinbarrozo1.2M
- 10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlinkjharwinbarrozo700.5k
RP2040 - Only AI
RP2040 Dual TLC5940 High-Current LED Driver Board
Properties
graph LR Ext5V[External 5V] --> RP2040[RP2040] Ext5V --> AMS1117_3V3[AMS1117-3.3] Ext5V --> TLC1[TLC5940 #1] Ext5V --> TLC2[TLC5940 #2] RP2040 --> TLC1 TLC1 --> TLC2 USB_VBUS -.->|isolated| Ext5V
Pending
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $7.42–$7.80 |
Digi-Key | $7.64–$11.40 |
LCSC | $7.62–$7.97 |
Mouser | $10.01 |
TME | $1.21 |
Verical | $1.47–$3.20 |
Controls
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