rp-2040 development board in the shape of arduino uno r3 so it supports its hats and also has esp32 for wifi and bluetooth and 5x5 grid of neo pixel leds
Journal 1 :- 2.0 hours
Journal 2 :- 1.5 hours
Journal 3 :- 0.4 hours
Journal 4 :- 1.5 hours
Journal 5 :- 1.0 hours
Journal 6 :- 1.5 hours
Journal 7 :- 1.3 hours
Journal 8 :- 2.0 hours
Journal 9 :- 1.0 hours
Journal 10 :- 0.5 hours
Journal 11 :- 2.0 hours
Journal 12 :- 2.5 hours
Journal 13 :- 2.0 hours
Journal 14 :- 5.2 hours
Journal 15 :- 1.0 hours
Journal 16 :- 0.5 hours
Journal 17 :- 0.5 hours
Journal 18 :- 5.5 hours
Journal 19 :- 2.0 hours
Journal 20 :- 3.0 hours
main goals I had was making it is that I wanted to have a powerful board on which Arduino hats can fit with wireless capabilities so I used both rp 2040 and esp 32 and connected gpios of both so rp 2040 can off load some tasks to esp 32. so in a sense it is like Arduino UNO but on steroids
and for usage too it can be used like a normal Arduino UNO
it has dual microcontroller so all the less important repetative tasks can be off loaded to esp32 and main work can be done by the rp 2040 chip with extra 16M bit memory and it can be used foor any project like lfr robot , micromouse , rc car etcc
● RP2040 :- main microcontroller
● W25Q128JVS :- 128Mbit Flash Memory for extra juice
● ESP32-C3-WROOM-02 :- backup microcontroller with wifi and Bluetooth capabilities
● 25 X WS2812B-2020 :- programmable rgb leds
| Component | Purpose | Qty | Cost (INR) | Distributor |
|---|---|---|---|---|
| RP2040 (QFN-56) | Main Microcontroller | 1 | ₹81.00 | Evelta |
| ESP32-C3-WROOM-02 | Wi-Fi / BLE Module | 1 | ₹312 | Evelta |
| W25Q128JVS (SOIC-8) | 128Mbit Flash Memory | 1 | ₹223 | Evelta |
| AP2112K-3.3 (SOT-23-5) | 3.3V LDO Voltage Regulator | 1 | ₹24 | Evelta |
| WS2812B-2020 (PLCC4) | Addressable RGB LEDs (D1-D24, D27, D29, D31) | 25 | ₹275 | Robu |
| 74AHCT125 | 3.3v to 5v converter | 1 | ₹113 | Lioncircuit |
| Standard LED (0603) | Status Indicator (D26) | 1 | ₹3.3 | evelta |
| USB-C Receptacle 14-Pin | Power and Data Interface (J1) | 1 | ₹8 | Hubtronics |
| 1x04 Pin Header/Socket | I/O Expansion / Programming (J6) | 1 | ₹11 | Robu |
| 1x06 Pin Header/Socket | I/O Expansion (J2) | 5 | ₹53 | Robu |
| 1x08 Pin Header/Socket | I/O Expansion (J4, J5) | 2 | ₹32 | Robu |
| 1x10 Pin Header/Socket | I/O Expansion (J3) | 1 | ₹17 | Robu |
| Push Button (KMR2) | Reset / User Input (SW1, SW2) | 2 | ₹126 | Robu |
| 1.1kΩ Resistor (0603) | Current Limiting / Pull-up | 1 | ₹1 | Robu |
| 4.7kΩ Resistor (0603) | I2C / General Pull-up | 2 | ₹5 | Robu |
| 10kΩ Resistor (0603) | Pull-up / Pull-down | 3 | ₹3 | Robu |
| 5.1kΩ Resistor (0603) | USB-C CC line Pull-down | 2 | ₹3 | Robu |
| 1μF Capacitor (0603) | Decoupling / Bypass | 6 | ₹8.5 | Robu |
| 10pF Capacitor (0603) | Crystal Load Capacitors | 2 | ₹1 | Robu |
| Crystal 3225 (4-Pin) | Clock Source for RP2040 (Y1) | 1 | ₹101 | lion circuit |
| PCB | PCB | 1 | ₹3375 | [Robu] |
| Hot plate | soldering | 1 | ₹2,749 | Amazon |
| soldering flux | gooye paste to combine components | 1 | ₹400 | amazon |
The Bare Components : ₹1,708.80
PCB Fabrication (Robu): ₹3,375.00
Assembly Tools (Amazon): ₹3,262.00
Grand Total: ₹8,345.8
