# PEP24



# Power and Control

## Batteries

Battery 1

Capacity: 71,688mah + 17,457mah + 14,206mah = 103,351mah

Battery 2

Capacity: 90,007mah + 12,816mah = 102,823mah

Battery 3

Battery 4

## PCB Iterations

<div id="bkmrk-">  
</div>### V0.1 (Breadboard)

Pre-PCB design that often was multiple parts of the system that would eventually become one.

##### Pros

- Easy to add/change components for testing

##### Cons

- Unreliable connections

##### Components

- [<span class="a-size-large product-title-word-break" id="bkmrk-esp32-wroom-32u">ESP32-WROOM-32U</span>](https://www.amazon.com/dp/B09KLS2YB3/?coliid=I1U4LPQTBNYHRZ&colid=2M05WPS5IOJ9R&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it)
- [<span class="a-size-large product-title-word-break" id="bkmrk-flipsky-75100-vesc">FLIPSKY 75100 VESC</span>](https://www.amazon.com/FLIPSKY-Aluminum-Electric-Skateboard-Controller/dp/B0C69D7RWB/ref=sr_1_1?crid=2UQNFVQ236A0B&keywords=flipsky+57100&qid=1697667522&sprefix=flipsky+57100,aps,82&sr=8-1)
- [<span class="a-size-large product-title-word-break">Stepper motor driver DM542T</span>](https://www.amazon.com/STEPPERONLINE-1-0-4-2A-20-50VDC-Micro-step-Resolutions/dp/B06Y5VPSFN/ref=pd_bxgy_d_sccl_1/134-5031395-1005037?pd_rd_w=mHmfe&content-id=amzn1.sym.7746dde5-5539-43d2-b75f-28935d70f100&pf_rd_p=7746dde5-5539-43d2-b75f-28935d70f100&pf_rd_r=TSDKWF5AZ0134JMXRA8C&pd_rd_wg=uHcD0&pd_rd_r=a2d1d5cc-f94e-4a7b-bcca-c007157c356e&pd_rd_i=B06Y5VPSFN&psc=1)
- [SparkFun Logic Level Converter - Bi-Directional](https://www.sparkfun.com/products/12009)

<details id="bkmrk-v0.1-%28breadboard%29-%C2%A0"><summary>V0.1 (Breadboard)</summary>

</details>### V1

Version one was created by Brandon Marcellus &amp; Juan Silva early on in the start of the project after we had started some of the basic wiring of control and data collection.

##### Pros

- Organization greatly improved
- Power distribution
- 

##### Cons

- Logic level shifter was not wired correctly
- Not enough IO ports were available for use
- SD Card module VCC pin was connected to 3.3V instead of 5V

<details id="bkmrk-v1-1"><summary>V1</summary>

[![IMG_0986 (1).jpg](https://secretlibrary.rccf.club/uploads/images/gallery/2024-04/scaled-1680-/IOepypf61KPjomct-img-0986-1.jpg)](https://secretlibrary.rccf.club/uploads/images/gallery/2024-04/IOepypf61KPjomct-img-0986-1.jpg)

</details>### V 1.1 (Breadboard)

### V2

# PEP24 Overview

PEP24 was RCCF's first time competing.

Our boat was a catamaran constructed out of layered XPS foam wrapped in fiberglass.  
  
This year provided a strong foundation for future years. The LIthium Iron Phosphate batteries, selected for their long life span, continued to power the team through the next two years.

#### 2024 Whitepaper: 

 <canvas data-pdfurl="https://drive.google.com/file/d/11PNnXL5A3J70MVy1WClwGJfLkxCzNWUP/view"></canvas>

####    
[2024 Google Photos](https://photos.app.goo.gl/ErfkZKPhptLR9qAP8)  
  


[![image.png](https://secretlibrary.rccf.club/uploads/images/gallery/2026-05/scaled-1680-/ZlfmGX8k2sd0DOMj-image.png)](https://secretlibrary.rccf.club/uploads/images/gallery/2026-05/ZlfmGX8k2sd0DOMj-image.png)

[![image.png](https://secretlibrary.rccf.club/uploads/images/gallery/2026-05/scaled-1680-/IPJOgKcSeMhrgco4-image.png)](https://secretlibrary.rccf.club/uploads/images/gallery/2026-05/IPJOgKcSeMhrgco4-image.png)