Shrink GPS + LoRa Tracker PCB Design
Budget: $250 – $750 USD
Redesign GPS + LoRa PCB from 40mm x 40mm → Target: 20mm x 20mm — Deliver updated Gerber files
Description: I have an existing GPS + LoRa tracker PCB design (currently 40mm x 40mm). I need a skilled PCB designer with RF experience to redesign this board with the goal of achieving 20mm x 20mm, using both sides of the PCB where appropriate, and by optimizing component selection where needed.
Scope of Work:
• Modify existing PCB layout to fit within target size of 20mm x 20mm.
• You may place components on both front and back of the PCB to optimize space usage.
• You are encouraged to propose smaller component alternatives (see below for example options) where this will help achieve a smaller board size while maintaining full functionality.
• Optimize component placement and layout to maintain good RF performance (GPS + LoRa antennas are internal — no external SMA connectors).
• Replace Micro USB with a compact USB-C connector or suggest better options for this size board.
• Provide complete updated design files:
◦ PCB layout file (EasyEDA / KiCAD / Altium — original file will be provided).
◦ Updated Gerber files.
◦ Updated BOM.
◦ Updated Pick & Place (CPL) file.
Component Change Notes:
To reduce overall board size, I am open to replacing the current GPS and LoRa modules with smaller alternatives. Example options you may consider:
LoRa Module:
• Replace current RFM95W (~16x16mm) with:
◦ Semtech SX1262 bare chip (~4x4mm) — preferred.
◦ Or compact SX1262-based modules (~12x12mm), such as EBYTE E22-900M22S or similar.
GPS Module:
• Replace current ATGM336H (~10x10mm) with:
◦ u-blox MIA-M10 (~4.5x4.5mm) — preferred.
◦ Or other smaller GPS modules as you may recommend.
If achieving 20mm x 20mm is not realistic without major loss of RF performance or critical functionality, you should:
• Propose the smallest practical board size you believe is achievable.
• Explain your design recommendations and any necessary trade-offs.
Background: This is a GPS + LoRa tracker device with the following core components (already present in the existing design):
• GPS module: ATGM336H-5N71 → to be replaced with smaller alternative if needed.
• LoRa module: RFM95W-915S2 → to be replaced with smaller alternative if needed.
• Internal antennas: GPS + LoRa antennas — already selected (but you may suggest adjustments for optimal layout).
• LiPo battery: compact, already selected.
• Charging circuit: currently Micro USB — to be replaced with compact USB-C.
Current passives: mostly 0805 and 1206 → should be shrunk to 0603 or smaller where practical.
Important Requirements:
Timeframe: You must be able to complete this project within a specific timeframe (we will confirm this before starting).
Commitment: Only bid if you are confident you can complete this work. If you are unsure, or do not have experience with compact RF / GPS / LoRa PCB layout, please do not bid. I will not accept offers that do not follow this requirement.
Deliverables:
• Updated PCB layout.
• Updated Gerber files.
• Updated BOM.
• Updated Pick & Place (CPL) file.
Screening Question (Required):
1. What size passives (capacitors / resistors) do you recommend for a compact 20mm x 20mm LoRa + GPS board, and why?
2. Please also describe your prior experience designing compact RF boards or GPS / LoRa devices.
3. How small are you confident in making the tracker
Closing: If you are experienced in compact PCB design, RF layout, and tight-space optimization, I look forward to working with you! Please include relevant past projects / portfolio with your bid.
Description: I have an existing GPS + LoRa tracker PCB design (currently 40mm x 40mm). I need a skilled PCB designer with RF experience to redesign this board with the goal of achieving 20mm x 20mm, using both sides of the PCB where appropriate, and by optimizing component selection where needed.
Scope of Work:
• Modify existing PCB layout to fit within target size of 20mm x 20mm.
• You may place components on both front and back of the PCB to optimize space usage.
• You are encouraged to propose smaller component alternatives (see below for example options) where this will help achieve a smaller board size while maintaining full functionality.
• Optimize component placement and layout to maintain good RF performance (GPS + LoRa antennas are internal — no external SMA connectors).
• Replace Micro USB with a compact USB-C connector or suggest better options for this size board.
• Provide complete updated design files:
◦ PCB layout file (EasyEDA / KiCAD / Altium — original file will be provided).
◦ Updated Gerber files.
◦ Updated BOM.
◦ Updated Pick & Place (CPL) file.
Component Change Notes:
To reduce overall board size, I am open to replacing the current GPS and LoRa modules with smaller alternatives. Example options you may consider:
LoRa Module:
• Replace current RFM95W (~16x16mm) with:
◦ Semtech SX1262 bare chip (~4x4mm) — preferred.
◦ Or compact SX1262-based modules (~12x12mm), such as EBYTE E22-900M22S or similar.
GPS Module:
• Replace current ATGM336H (~10x10mm) with:
◦ u-blox MIA-M10 (~4.5x4.5mm) — preferred.
◦ Or other smaller GPS modules as you may recommend.
If achieving 20mm x 20mm is not realistic without major loss of RF performance or critical functionality, you should:
• Propose the smallest practical board size you believe is achievable.
• Explain your design recommendations and any necessary trade-offs.
Background: This is a GPS + LoRa tracker device with the following core components (already present in the existing design):
• GPS module: ATGM336H-5N71 → to be replaced with smaller alternative if needed.
• LoRa module: RFM95W-915S2 → to be replaced with smaller alternative if needed.
• Internal antennas: GPS + LoRa antennas — already selected (but you may suggest adjustments for optimal layout).
• LiPo battery: compact, already selected.
• Charging circuit: currently Micro USB — to be replaced with compact USB-C.
Current passives: mostly 0805 and 1206 → should be shrunk to 0603 or smaller where practical.
Important Requirements:
Timeframe: You must be able to complete this project within a specific timeframe (we will confirm this before starting).
Commitment: Only bid if you are confident you can complete this work. If you are unsure, or do not have experience with compact RF / GPS / LoRa PCB layout, please do not bid. I will not accept offers that do not follow this requirement.
Deliverables:
• Updated PCB layout.
• Updated Gerber files.
• Updated BOM.
• Updated Pick & Place (CPL) file.
Screening Question (Required):
1. What size passives (capacitors / resistors) do you recommend for a compact 20mm x 20mm LoRa + GPS board, and why?
2. Please also describe your prior experience designing compact RF boards or GPS / LoRa devices.
3. How small are you confident in making the tracker
Closing: If you are experienced in compact PCB design, RF layout, and tight-space optimization, I look forward to working with you! Please include relevant past projects / portfolio with your bid.