Storage & Sending Calculator

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Bytes per record

Wake interval s

Storage size Mbit — it will be sold in bits

Serial speed baud

Radio current mA — 0 if there is no radio

Seconds per message

Your cycle charge mA·s — from the budget tool

Pack capacity mAh

Enter a record size and an interval, then press Calculate.

From the book — Chapter 11. storage days = capacity in BYTES ÷ (records per day × bytes per record). An “8 Mbit” chip is one megabyte — divide by eight before you plan around it.

Chapter 11, including why sending is ten thousand times dearer than keeping. Everything stays in your browser — no sign-up, nothing stored.