---

December 2017

Nuts and Volts Magazine

---

Features

Basic Biological Signal Monitoring with a Translational Reality Twist

Use an inexpensive ear-clip heart rate sensor and an everyday Arduino to create a simple biological monitoring system.

Climbing the Learning Curve

A step-by-step guide to connecting your cell phone to a PIC chip via Bluetooth.

Replacing The 555 With A PIC — Part 3 — A Digital Analog

This third article discusses the less complex audio oscillator circuits from 555 Timer IC Circuits by Forrest Mims.

Total Solar Eclipse Near Space Flight Results

in Near Space

A near space experience during the Solar Eclipse on August 21, 2017.

---

Projects

Build a Custom Weather Gauge — Part 1

Explore Internet connected digital & analog displays with this custom weather gauge platform.

---

Columns

Open Communication
by Louis E. Frenzel
Personal Communications Services: The MURS Option
You know about CB, FRS, GMRS, and FRS radios, but have you heard about MURS?

The Design Cycle
by Fred Eady
Go ARM in ARM with Hardware and Firmware
Are you ready to get serious about ARM hardware and firmware?

Q&A
by Kristen McIntyre
Reader Questions Answered Here (12.2017)
Questions regarding relay remote control, reviving a boombox, and controlling a high-power LED with a Raspberry Pi.

Departments